It is found in an area where a tooth should have formed but is missing.
Primordial cysts most commonly arise in the area of mandibular third molars.
Under microscopes, the cyst looks like an odontogenic keratocyst (also called a Keratocyst odontogenic tumor) whereby the lesions displays a parakeratinized epithelium with palisading basal epithelial cells.
[medical citation needed] Most "primordial cysts" are actually Keratocyst odontogenic tumors (KOT's).
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